Loose Diamonds Search

Judging Diamond Quality

Engagement Rings
View our diamonds here.

What to Look For

If you want to begin judging diamond quality, you must first learn and understand the 4 C’s, which are four characteristics of diamonds that give the gem stone it’s overall value. The 4 C’s for judging diamond quality include the diamond's color, clarity, carats and cut.

Judging Color

Most diamonds are considered to be ideal if they are transparent or colorless. Diamonds that are rated as colorless are the most expensive of diamonds. Diamond colors are rated with an alphabet grading system that starts with “D” and ends with “Z.” Completely colorless diamonds fall in the “D” and “E” grade while colored, fancy diamonds are at the other end of the alphabet, at “Y” and “Z.”

There are two main ways that jewelers use to judge diamond quality based on color. They may pull out a set of reference stones and find the closest match between the diamond and the reference stone to determine its letter grade. Alternatively, the jeweler may use a colorimeter, which can electronically measure the color of the stone and determine its grade within 1/3 of a grade.


Solitaire Rings

Solitaire Rings

Rings With Sidestones

Rings With Sidestones

Matching Bridal Sets

Matching Bridal Sets

Sareen Engagement Rings

Sareen Engagement Rings

Tension Rings

Tension Rings

Three Stone Rings

Three Stone Rings

Tulip Collection

Tulip Collection

Tulip Matching Bridal Sets

Tulip Matching Bridal Sets

Judging Clarity

Diamond clarity refers to whether or not the diamond is clear all the way through, or whether it has tiny flaws and cloudy areas within the gemstone. It’s actually very rare to have a diamond with absolute perfect clarity and no flaws but most diamond flaws are not visible to the naked eye and can only be seen with a magnifying device.

The Gemological Institute of America (GIA) uses a magnification of about 10x when judging diamond quality based on the clarity. There are treatments available to make a diamond appear nicer than it actually is and the treatments should lower the overall price of the diamond so it is important to do your research before purchasing a diamond to be sure you are not spending more money than you should.

Judging Carat Weight

Diamond carat is the term we used to describe the weight of a diamond gemstone. One carat is equivalent to 200 milligrams of weight. A single diamond with a high amount of carat weight is more expensive than the equivalent amount of carats in multiple stones. This is because finding the larger diamonds is much more rare of an occurrence. So, if you want a 2-carat diamond ring, for example, you may decide to go with a half-carat diamond surrounded by smaller diamonds that add up to one and a half carats to give you the total of 2 carats. Judging diamond quality by the amount of carats is difficult since different shaped gemstones and stones with different levels of clarity will be priced differently even if they have the same amount of carats.

Judging Cut

One of the most important factors in judging diamond quality is judging the cut of a diamond. It’s important because a quality diamond cut will be more brilliant and reflects light more beautifully, and yet the cut of a diamond has the least impact on the overall price of the diamond.

When judging diamond quality on the cut of a diamond, look at the stone in a well lit area. If the light seems to go into the stone and bounce back, showing a sparkling reflective surface, the diamond has a good cut. The angles and shapes of a diamond are important to judging diamond quality and the overall appearance of your diamond.

Related Articles



diamonds Best diamond prices online
loose diamonds Free FedEx shipping to the USA
engagement rings No risk 30 day money back guarantee
diamond rings All engagement rings are made in the USA
wedding rings Registered with the Better Business Bureau
certified diamonds Huge selection of high quality diamonds
  More Reasons >>

Just wanted to give you a quick THANK YOU... you helped me out a lot with this whole situation. The diamond ring is safe at my home. Thank you so much for your help and...
Ryan

View More


Hey, I got the ring yesterday in the mail. The ring looks even better than the picture, and I appreciate the speedy delivery. If I have need of more jewelry for my future...
Kelly

View More


I've already picked up the ring and it looks fantastic! Thanks again for all your help. I'm assuming Novori already has a large satisfied customer base and yet again you and Novori...
Aaron

View More


Hi. Wanted to let you know we received the ring this morning. It is absolutely beautiful. You and your team have been amazing to deal with. Can't thank you enough. We will definitely be coming...
Michelle

View More


I wanted to thank you and everyone else at Novori. I received my ring on Friday and was absolutely blown away. You all did a wonderful job. Thanks again....
Jason

View More


I just want to say, thank you for your business. Gorgeous Stone! I am overly satisfied and would recommend your business to anyone....
Rob

View More


I have received the tension set engagement ring, WOW, very stunning. Thanks a lot for your help and direction in picking out a very beautiful diamond. I am sure that my finace to...
John

View More


The ring looked outstanding, so outstanding tears started to flow at the same time "Yes I will" came out of her mouth. Thank you so much! Your product was everything you said it would be...
Jody

View More


I gave it too her last night and she said yes. She loved the ring. The diamond is nothing less then perfect. It appraised over 3 times the purchase cost. Thanks...
David

View More


I am pleased to inform you that I received yesterday the engagement ring. It is beautiful - excellent job. Thank you so much. I will recommend your website....
Jean

View More


Package received... ring is BEAUTIFUL! Thanks you for the expedited delivery. I'll look to you when we're ready to buy our wedding bands (saw a couple I really liked). Thanks again for the excellent service,...
Patrick

View More


On Friday morning I received my ordered engagement ring and it is even more beautiful than I thought. I am so happy with my purchase. I was very unsure about ordering such an important item...
Ted

View More


Thank you so much for helping us pick out and design our engagement ring and wedding band. They're PERFECT. We love them and have gotten endless compliments. We're so pleased and we will always recommend...
Jay & Becky

View More


Thanks a lot for your assistance through this process. You've been a huge help, and I will be sure to let others know of my experience with you. I didn't think the timing and everything...
Victor

View More


Just a quick Thank You. The ring is perfect and the service was even better! Delivered, as promised and on time. I wish all of my purchasing experiences were as good. Thanks....
Terry

View More



Diamond Jewelry Member
Novori BBB


Diamond Rings Payment Options

Credit Card Processing

 
  |    Home  |   Contact Us  |   Payment Policy  |   Return Policy  |   Privacy Policy |   Engagement Rings News  |   Diamonds  |   SiteMap  |  
   
  © 2004-2014 Novori Jewelry Inc. All rights reserved.     Terms and Conditions